Envelope



FIG. 1 is a front elevation view of the envelope showing my new design;

FIG. 2 is a rear elevation view of the envelope of FIG. 1; and,

FIG. 3 is a front perspective view of the envelope of FIG. 1.

It is understood that the sides of the envelope are of no substantial thickness. 

An ornamental design for an envelope, as shown and described. 